From: Matthias Brugger <matthias.bgg@gmail.com>
To: Enric Balletbo i Serra <enric.balletbo@collabora.com>,
linux-kernel@vger.kernel.org
Cc: chunkuang.hu@kernel.org, hsinyi@chromium.org,
kernel@collabora.com, drinkcat@chromium.org, eizan@chromium.org,
linux-mediatek@lists.infradead.org, jitao.shi@mediatek.com,
Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@linux.ie>,
Philipp Zabel <p.zabel@pengutronix.de>,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 7/7] drm/mediatek: mtk_dsi: Reset the dsi0 hardware
Date: Fri, 6 Aug 2021 19:33:54 +0200 [thread overview]
Message-ID: <07319ed2-aed9-cbd7-06aa-6603a9bd4567@gmail.com> (raw)
In-Reply-To: <20210714121116.v2.7.Idbb4727ddf00ba2fe796b630906baff10d994d89@changeid>
On 14/07/2021 12:11, Enric Balletbo i Serra wrote:
> Reset dsi0 HW to default when power on. This prevents to have different
> settingbetween the bootloader and the kernel.
settings between the...
>
> As not all Mediatek boards have the reset consumer configured in their
> board description, also is not needed on all of them, the reset is optional,
> so the change is compatible with all boards.
>
> Cc: Jitao Shi <jitao.shi@mediatek.com>
> Suggested-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
> ---
>
> (no changes since v1)
>
> drivers/gpu/drm/mediatek/mtk_dsi.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index ae403c67cbd9..d8b81e2ab841 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -11,6 +11,7 @@
> #include <linux/of_platform.h>
> #include <linux/phy/phy.h>
> #include <linux/platform_device.h>
> +#include <linux/reset.h>
>
> #include <video/mipi_display.h>
> #include <video/videomode.h>
> @@ -980,8 +981,10 @@ static int mtk_dsi_bind(struct device *dev, struct device *master, void *data)
> struct mtk_dsi *dsi = dev_get_drvdata(dev);
>
> ret = mtk_dsi_encoder_init(drm, dsi);
> + if (ret)
> + return ret;
>
> - return ret;
> + return device_reset_optional(dev);
> }
>
> static void mtk_dsi_unbind(struct device *dev, struct device *master,
>
prev parent reply other threads:[~2021-08-06 17:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 10:11 [PATCH v2 0/7] Add support to the mmsys driver to be a reset controller Enric Balletbo i Serra
2021-07-14 10:11 ` [PATCH v2 1/7] arm64: dts: mediatek: Move reset controller constants into common location Enric Balletbo i Serra
2021-07-30 5:04 ` Guenter Roeck
2021-08-06 15:43 ` Matthias Brugger
2021-07-14 10:11 ` [PATCH v2 2/7] dt-bindings: mediatek: Add #reset-cells to mmsys system controller Enric Balletbo i Serra
2021-07-16 17:42 ` Rob Herring
2021-07-14 10:11 ` [PATCH v2 3/7] dt-bindings: display: mediatek: add dsi reset optional property Enric Balletbo i Serra
2021-07-16 17:55 ` Rob Herring
2021-07-14 10:11 ` [PATCH v2 4/7] arm64: dts: mt8173: Add the mmsys reset bit to reset the dsi0 Enric Balletbo i Serra
2021-07-16 17:56 ` Rob Herring
2021-07-14 10:11 ` [PATCH v2 5/7] arm64: dts: mt8183: " Enric Balletbo i Serra
2021-07-16 17:57 ` Rob Herring
2021-07-14 10:11 ` [PATCH v2 6/7] soc: mediatek: mmsys: Add reset controller support Enric Balletbo i Serra
2021-07-20 10:52 ` Philipp Zabel
2021-07-20 17:07 ` Enric Balletbo i Serra
2021-07-21 9:53 ` Philipp Zabel
2021-08-06 17:34 ` Matthias Brugger
2021-07-14 10:11 ` [PATCH v2 7/7] drm/mediatek: mtk_dsi: Reset the dsi0 hardware Enric Balletbo i Serra
2021-08-02 23:21 ` Chun-Kuang Hu
2021-08-06 17:33 ` Matthias Brugger [this message]
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